Foam extrusions involve precise control of variables such as heat, pressure, and density to create uniform quality products. The Celuka process is a popular method used for creating foam core moldings, paneling, and doors. Melt pumps are commonly used to stabilize mass flow and ensure accurate control of the melt temperature.
Foam extrusions are made through a process that involves extracting a product with multiple variables that relate to each other. Through this process, one variable causes a ripple effect to create an end product. Foam extrusions are made possible with the use of precision equipment, as a special foam controls the process variables. As a result, uniform quality can be maintained.
The process of creating foam extrusions has been around for many years. During World War II, Styrofoam logs were made using foam extrusion processes. These logs were used as floats for anti-submarine nets, as well as rafts for military troops.
The Dow Company released the first commercially available extruded foam, the non-cured foam, in 1958. Two years later, the Japanese were able to extrude the cured foam with the use of chemical foaming agents. France also pioneered the extrusion of polyvinyl chloride (PVC), which involved cooling the surface to form a solid skin. This method is widely known as the Celuka process.
The Celuka process was discovered in 1989. Today it remains one of the most popular methods of foam extrusion. It is commonly used to create foam core moldings, paneling and doors. Other products made with foam extrusions include support rods, pool noodles and grooves used to secure doors, windows and patios.
Extruded polyethylene foam is one of the most popular foam extrusions because it is a self contained material. This is a complex molding process that requires control of related variables. Heat, pressure, additives, resins and density are part of the foam extrusion process. All variables are capable of combining at a molecular level. Therefore, each must be controlled to create the product.
Melt pumps are commonly used to enhance foam extrusions. The main way fusion pumps help in the process is by stabilizing the mass flow. Typically, the extrusion of foam products also requires accurate control of the melt temperature. If the temperature of the plastic varies, it can reshape the foam. Even if the temperature has dropped just a few degrees, the product can be a total failure. A high quality foam product is only produced when all variables are properly controlled.
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